Name: Boletus illudens Peck.
Most Confident Observations:
Copyright © 2011 Roy Halling (royh)
Copyright © 2012 Stephen Russell (Mycota)
Copyright © 2013 walt sturgeon (Mycowalt)
Copyright © 2015 walt sturgeon (Mycowalt)
Version: 3
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First person to use this name on MO: FunGuy
Editors: Eddee, Django Grootmyers

Nomenclature:

Rank: Species

Status: Deprecated

Name: Boletus illudens

ICN Identifier: missing

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Author: Peck.

Citation: Ann.Rep.NY.St.Mus.Nat.Hist. 50:108. 1897

Preferred Synonyms:Xerocomus illudens (Peck) Singer

Classification:
Lifeform:
Brief Description: [See More | Edit]

Cap: 3-9 cm; convex, becoming broadly convex or nearly flat; dry; smooth or finely velvety; margin even; brownish to yellowish brown, reddish brown, or cinnamon.

Pore Surface: Yellow, becoming olive yellow or brownish yellow with maturity; not bruising; pores primarily angular, 1-2 mm wide; tubes to 16 mm deep.

Stem: 3-9 cm long; 0.5-1.5 cm thick; often tapered downward; dry; solid and tough; widely and coarsely reticulate near the apex (and often for half—or more—of the stem’s length); whitish to pale brownish; basal mycelium whitish to yellowish.

Flesh: Pale yellow; not staining on exposure.

Odor and Taste: Not distinctive.

Chemical Reactions: Ammonia flashing blue-green on cap, then resolving to brownish with a greenish ring; negative on flesh. KOH dark brown on cap; negative on flesh. Iron salts bluish gray on cap; bluish gray on flesh.

Spore Print: Olive to olive brown.

Microscopic Features: Spores 10-14 × 4-5 µ; smooth; subfusiform. Pileipellis a trichoderm of tangled hyphae 4-12 µ wide, with scattered or frequent inflated and round elements 12-17 µ wide.

Descriptions: [Create]

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Deprecated
By: Django Grootmyers (heelsplitter)
2015-09-04 00:08:19 CST (+0800)

Nuhn et al. (2013) find this to be in Xerocomus sensu stricto.

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